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Question by Leo500 · Jun 06, 2018 at 01:46 AM · scripting problemjumpball

Hi.somebody can explain me why this jump ball script doesnt work?.Thanks

Is only one ball whit rigidbody and jump script .The ball is over a plane.

using System.Collections; using System.Collections.Generic; using UnityEngine;

public class jump_ball : MonoBehaviour {

     public float jumpValue=100.0f;
     private Rigidbody rb;

 // Use this for initialization
 void Start () {
             
     rb=GetComponent<Rigidbody>();

 }
 
 // Update is called once per frame

 void FixedUpdate () {
     if(Input.GetButtonDown("Jump") && Mathf.Abs(rb.velocity.y)<0.01f)

     rb.AddForce(Vector3.up*jumpValue,ForceMode.Impulse);


 }

}

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avatar image Raimi · Jun 06, 2018 at 01:56 AM 0
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Try lowering rigidbody Gravity and see what happens. maybe its not enough force to get it off the ground.

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Answer by Leo500 · Jun 24, 2018 at 01:34 AM

Thanks at all.It was a silly mistake.The line that asign valor to velocity not assign anything I dont know why .Then when I assign this value from the inspector all work fine.Thanks again

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Answer by Captain_Pineapple · Jun 06, 2018 at 08:02 AM

Hey there,

you could try some things to fix your script: First up try to increase the force you apply, if your rigidbodys mass is over 1 your body is too heavy to jump. Next up check if the force in the public variable in your object in the scene actually has the right value.

Add a Debug.Log() to see if your code acutally is called:

 void FixedUpdate () {
      if(Input.GetButtonDown("Jump") && Mathf.Abs(rb.velocity.y)<0.01f)
      {
          Debug.Log("jumping with force: "+ jumpValue);
          rb.AddForce(Vector3.up*jumpValue,ForceMode.Impulse);
      }
 }

In case this Log is NOT called remove the condition of the velocity check (you probably want to change this condition to some "I am on ground condition" instead). If it still is NOT Called check which Button is actually bound to the "Jump" Button. You could try to work around this by timewise using Input.GetKeyDown(KeyCode.Space); If this still does not work come back here.

Hope this helps. In future please add Debug logs and so on to your code so that we may see that you already checked possible more obvious problems like the AddForce not beeing called at all.

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